Bearing seal



Feb. 15, 1949. c. D. MAGNE'ISEN 2,461,907

BEARING SEAL Filed March 16, 1948 2 Sheets-Sheet 1 INVENTOR. Oman-s .0. mnmvtsflv may 11% ATTORNEY.

. 1949- c. D. MAGNESEN 2,461,907

BEARING SEAL Filed March 16, 1948 2 Sheets-Sheet 2 INVENTOR. (4 4445: 4?. WAG/visa Patented Feb. 15, 1949 UNITED STATES PATENT OFFICE 2,461,907 BEARING SEAL Charles D. Magnesen, Chicago, Ill., asslgnor-to Modern Design Products Company, Chicago, 11]., a corporation of Illinois Application March 16, 1948, Serial No. 15,240

2 Claims. 1

large number of various constructions of bearing seals have been proposed,'for the purposes described such constructions have not generally been entirely satisfactory. In some of the most popular types of bearing seals the bearing nose or seal member is usuallyv carried by a housing that is connected directly to a rotating shaft by means of a diaphragm, bellows or other flexible connector which is securely fastened to the shaft and to the bearing nose housing, so that the force of rotating the seal against the bearing surface must of necessity be conveyed through the flexible member of the ensemble. This, together with the other strains on this member, naturally tends to weaken this particular element of the assembly and greatly reduce the life constructed in this general manner.

The principal object of the present invention is to provide an improved bearing seal of a type wherein .the flexible member, which thrusts the bearing nose against a bearing surface under resilient pressure, is not subjected to the strain of being the vehicle through which the entire bearing seal ensemble is rotated.

A further object of the present invention is to provide an improved structure of the type described wherein the flexible member of the ensemble is used only to permit the necessary movement longitudinally of the shaft so that sufiicient of a bearing seal.

.which extends through the housing. While a Fig. 5 is a back view --'of removable bearing nose;

force may be exerted on the bearing nose to make an efiective seal against a bearing surface.

A further object of the invention is to provide an improved bearing seal of the type described wherein the bearing nose, which is the only wearing part, is made removable so that when the same wears out it may be removed and a new bearing nose substituted.

A further object of the invention is to provide a bearing seal assembly of the type described that is extremely simple in construction yet capable of long and hard usage without becoming broken or out of order.

A further object of the present invention is to provide a construction wherein the drive between the rotating shaft and the bearing seal mounted on the same for rotation therewith is a positive mechanical connection, so arranged, however, that the bearing nose is capable of longitudinal movement about the shaft and is provided with means for effecting a continuous yleldable pressure of the same against a bearing surface.

Other objects and advantages will be more apparent from the following description wherein reference is had to the accompanying two sheets of drawings, upon which:

Fig. 1 is a vertical sectional view showing a rotating shaft extending from a housing and provided with my improved bearing seal, the seal being broken into half-section to more clearly show the parts;

Fig. 2 is an exploded perspective view of my improved bearing seal illustrating the six parts Which are assembled together in a front perspective position;

Fig. 3 is a front view of a modified form of my improved bearing seal mounted upon a rotating shaft and showing a modified construction thereof in which the bearing nose is removable;

Fig. 4 is a vertical sectional view of the same taken generally on the lines 8-4 of Fig. 3;

of the same showing the manner in which the positive drive for the bearing nose is obtained; 1

Fig. 6 is a front elevational view of a modified form of my improved bearing seal mounted upon a rotating shaft showing a diiferent construction Fig. 7 is a similar front elevational view of my improved bearing seal showing a still further modified form of removable bearing nose; and

Fig. 8 is a vertical sectional view of a modified form of construction in which the bearing nose is shown located against the wall of a housing from which the shaft emanates.

In the embodiment of the invention which I have chosen to illustrate, I have shown a rotatable shaft I0 which has an enlarged portion l2 that extends through the vertical wall Id of a housing within which fluid under pressure may be present. The shaft I!) may extend through an enlarged opening H5 in lateral walls I 8 and ing l4 and through an opening 22 in a cover plate 24 positioned over the opening l6 and provided with bolt members 26 for connecting the same in sealed relation over the opening Hi. The usual gasket 28 may be provided between 20 of the housiii. I employ a follower washer the opposed faces of the cover plate and the wall of the opening.

The bearing nose III, which may be constructed of graphite, hardened metal or any other suitable or desirable composition, depending upon the purpose for which the same is provided, may have an annular shoulder 32 which is adapted to bear against a bearing surface 84 on the cover plate 24. The opening it through the bearing nose is sufficiently large so that the shaft i extends therethrough with clearance. The bearing nose may be supported in a sheet metal housing member 88 formed with the inwardly turned flange portion 40 to provide a forward retainin wall for the bearing nose.

I provide a resilient disc-like member 42 constructed of neoprene,'leather, flexible metal or any other suitable material having its periphery positioned within the housing 38 and provided with a sleeve portion 44 adapted to be frictionally and in a driving relation positioned upon the shaft 10. In order to clamp the same upon the shaft I also provide is provided with a pair of flattened sides 48 and 52, which has its peripheral edge positioned within the housing a band member 48 which form of bearing nose 38. The edge--of the housing 38 may be turned inwardly as shown at 54 to assemble together the bearing nose, the resilient member 42 and the fol-.

lower 52. The follower 52 is provided with an opening 56 having flattened side walls 58 of a size sufficiently large to telescope over the fastener member 48. A. coiled spring member 50 completes the ensemble and may be positioned between a shoulder 62 on the portion is of the shaft I0. and the follower member 52. In order to securely fasten the disc-like member 42 to the bearing ncne and to permit limited forward flexing movement of the member 42, I provide a plurality Of circular serrations 3i adjacent the outer edge of the nose where the same is fastened against the member 42.

When the above mentioned assembly is mounted upon the shaft in the position shown in Fig. 1, the spring 50 will cause the bearing nose 30 to frictionally engage against the bearing surface 34 of the cover plate It due to the pressure of spring 60 positioned against the shoulder 62 upon the shaft. The flexible member 42 may yieldingly permit forward movement of the hearing nose 30 as the same wears due to the constant pressure of spring -60. The entire assembly, however, is caused to rotate with the shaft In by reason of the flattened sides 68 and 50 of the collar 46 being positioned through the opening 56 of the follower 52 so that at all times a constant mechanical connection is provided between the shaft it! and the entire bearing assembly. In this manner, the only wear upon the flexible member 42 will be the flexing or the same to permit longitudinal movement of the bearing nose 39 along the .shaft llbi hus insuring a much longerlife for the entireasseriilaply Ast bearing, nose isthe on y-p on omny m e i sa i s member that an wear cutie no l use. I h v s o ne nm fi atiqes of the samein' which the nose portion is remoyable. Thus,. for ex ample, in Fig. 3 Ihave shown a pair fofslotsfi fi in the forward wall -40 :of t he housing 38, I have shown a the bearing nose having. an outer peripheral edge and ia'pair of lugs 10' extending outwardly to engage the inner surface of the housing 38. Thi'is the fbearin'g nose may inserted with the lugs It! through the slots 65 and slightlyrotated to prevent the same from falling apart during storage or in transit. In use it is immaterial whether the bearing nose has a portion confined in the housing 3! or not.

In the modification shown in Fig. 4 I have also shown the seal member 88 and the follower as an integral unit formin the member is as shown at I! to telescope over the collar 48.

In Fig. 5 I have also shown the collar 48 provided with the hexagonal peripheral walls 12 and a complementary slightly larger opening 14 in the wall 39 through which the same is telescoped.

In Fig. 6 I have shown a still further modified It and housing ll inwhi'ch the housing wall is provided with a pair of inwardly extending lugs 1!. The bearing nose is provided with a pair of complementary slots 1! and may be inserted into the assembly by pushing the slots over the lugs and then rotating the nose slightly so that it will be held in position by the lugs.

In Fig. '7 I have shown a still further modified form of housing and a bearing nose assembly in which the housing 38 is provided with a pair of indented ridges l0 and the bearing nose with a pair of grooves 82 to fit over the same; thus, while the,bearing nose is not held against removal from the housing, it is still assembled together with the same in a driving relation and when the housin 38 is rotated the bearing nose rotates therewith.

In Fig. 8 I have shown a form of construction in which the bearing nose 30 maybe mounted directly against the bearing surface 84 of the housing 86 within which the fluid may be contained. While the construction of the bearing seal assembly shown herein may be similar to that pre-- viously described, I have illustrated the manner in which the seal may be reversed upon the shaft from that shown in Fig. l, and provide an effective seal directly against the wall of a housing of a fluid chamber.

While I have illustrated and described a specific embodiment of the invention and several modifications thereof, it will be apparent that the generic features which I desire to protect are the combination with a longitudinally alignable bearing nose of a positive or mechanical drive therefor from the shaft to which it is fastened, hus relieving the greater part of the strain upon the flexible or resilient disc, and permitting in this manner the use of a cheaper construction. I contemplate that changes and modifications may be made in the exact details shown, and what I desire to secure and protect by Letters Patent of the United States is:.

l. A seal assembly for preventing flow of fiuid along the surface of a cylindrical shaft, comprising a cylindrically shaped housing adapted to loosely encircle said shaft, a ring-shaped bearing means fixedly secured in said housing at one end thereof and having a forwardly projecting annular portion extending therefrom and adapted to bear axially, against an annularsunface, v.a... .-=sil i .t-. iskzli s m m r mou ted in lil.-l .o l .hflhmd.fiaid bearing member and paying a earwardly ,jextending sleeve portion adapted to embrace the hflfiiaa collar surroundin; sa d. le ve p tionandrv am s en s i h t. e d-. .1a v n a po n l p riphery, an end washer having a central opening formed to telescopically fltoversaid collarin xially slidable driving connection therewith, said W sher. b etles aga st. t eau ma of said disk-like member andhaving its outer periphery secured in said housing.

A sealing unit to prevent the escape of fluid along a rotating shaft comprising an inherently "resilient member having a sleeve portion non-rotatably mounted on the shaft and a laterally flexible flange-like portion extending radially therefrom, a collar arranged to clamp said sleeve portion to said shaft. an end member slidably telescoped over said collar and arranged in driving relation therewith, said end member engagm the margin of the flange-like portion of said resilient member, a disk-like bearing element telescoped over said shaft forwardly of said resilient member and having a forwardly projecting annular nose portion, said bearing element having one or more peripherally extending lugs, a cylindrical housing surrounding the outer edges of said bearing element, resilient member and end member, said housing having its end margins turned inwardly to clamp said members together in a tight unitary structure, the forward end margin having one or more radial slots therein corresponding in number and circumferential position to said lugs whereby said bearing. element may be removed and replaced when worn.

CHARLES D. MAGNESEN.

REFERENCES CITED The following references are of rec ordin the file of this patent:

UNITED STATES PATENTS Number Name Date 1,950,852 Kuehn et al Mar. 13, 1934 2,272,526 Keeran Feb. 10 1942 2,360,372 Snyder Oct. 17%1944 

